CN215990344U - Motor stator cooling structure and motor - Google Patents
Motor stator cooling structure and motor Download PDFInfo
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- CN215990344U CN215990344U CN202121556193.0U CN202121556193U CN215990344U CN 215990344 U CN215990344 U CN 215990344U CN 202121556193 U CN202121556193 U CN 202121556193U CN 215990344 U CN215990344 U CN 215990344U
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Abstract
The application provides a motor stator cooling structure and motor. This motor stator cooling structure includes stator core (1), the stator wire casing, winding (13) and cooling runner subassembly, the stator wire casing includes inboard stator wire casing (2) and outside stator wire casing (3), winding (13) are around establishing in inboard stator wire casing (2) and outside stator wire casing (3), the cooling runner subassembly includes axial runner (4) along the axial extension of stator core (1), axial runner (4) set up in inboard stator wire casing (2) and outside stator wire casing (3). According to the motor stator cooling structure provided by the application, the motor stator can be effectively cooled, the local temperature of the winding is prevented from being too high, and the output power of the motor is improved.
Description
Technical Field
The application relates to the technical field of motors, in particular to a motor stator cooling structure and a motor.
Background
With the vigorous promotion of the industry upgrading of the country, the field of motors can be continuously developed to high speed and miniaturization. The power density and loss density of the motor are increased, and the heat generation of the motor winding, especially the end winding, is further increased.
The back winding type winding form is adopted, so that the size of the end part of the motor winding, particularly the size of the wire outlet end, can be effectively reduced, and the heating value of the end part can be reduced as the resistance of the end part is reduced. However, the space of the insulation filling medium required by the back-wound winding under the condition of the same number of turns is larger, and the size of the stator core of the motor is increased in order to ensure that the magnetic field distribution of the motor is not excessively saturated and the output torque under the same current is unchanged. The heat of the winding, especially the inner winding far away from the housing with the cooling flow channel and the teeth of the inner stator is difficult to conduct, so that the local temperature of the stator, especially the winding, is overhigh, the output power of the motor is limited, and the motor can be damaged in serious cases to cause safety accidents.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved lies in providing a motor stator cooling structure and motor, can form effective cooling to motor stator, avoids winding local temperature too high, improves motor output.
In order to solve the problem, the application provides a motor stator cooling structure, including stator core, stator wire casing, winding and cooling runner subassembly, the stator wire casing includes inboard stator wire casing and outside stator wire casing, and the winding is around establishing in inboard stator wire casing and outside stator wire casing, and the cooling runner subassembly includes the axial runner of the axial extension along stator core, and the axial runner sets up in inboard stator wire casing and outside stator wire casing.
Preferably, the stator wire slot is filled with an insulating medium, the insulating medium is a heat conducting material, and the axial flow channel is embedded in the insulating medium.
Preferably, the axial flow channel is fixed by an insulating medium.
Preferably, the insulating medium is formed by mixing a resin and a curing agent, and the thermal conductivity of the insulating medium is greater than or equal to 0.5W/(m × k).
Preferably, the cooling flow channel assembly further comprises a connecting flow channel through which the axial flow channels communicate.
Preferably, the connecting flow channels include a first connecting flow channel and a second connecting flow channel, adjacent axial flow channels located in the inner stator wire slots are sequentially communicated through the first connecting flow channel to form inner cooling flow channels connected in series, and adjacent axial flow channels located in the outer stator wire slots are sequentially communicated through the second connecting flow channel to form outer cooling flow channels connected in series.
Preferably, the connecting flow channel comprises a third connecting flow channel and a fourth connecting flow channel, the axial flow channel in the inner side stator wire slot and the outer side stator wire slot where the same winding at the first end is located is communicated through the third connecting flow channel, the axial flow channel in the inner side stator wire slot and the outer side stator wire slot where the adjacent winding is located at the second end is communicated through the fourth connecting flow channel, and a cooling flow channel assembly which is sequentially connected in series inside and outside is formed.
Preferably, the connecting flow channel comprises a first connecting flow channel, a third connecting flow channel and a fourth connecting flow channel, adjacent axial flow channels in part of the inner side stator wire slots are communicated through the first connecting flow channel, part of the inner side stator wire slots in which the same winding is positioned at the first end are communicated with the axial flow channels in the outer side stator wire slots through the third connecting flow channel, and part of the inner side stator wire slots at the second end are communicated with the axial flow channels in the outer side stator wire slots in which the adjacent winding is positioned through the fourth connecting flow channel, so that the cooling flow channel assembly which is sequentially connected in series inside and outside is formed.
Preferably, the connecting flow channel comprises a second connecting flow channel, a third connecting flow channel and a fourth connecting flow channel, adjacent axial flow channels in partial outer side stator wire slots are communicated through the second connecting flow channel, partial inner side stator wire slots in which the same winding is positioned at the first end are communicated with the axial flow channels in the outer side stator wire slots through the third connecting flow channel, partial inner side stator wire slots at the second end are communicated with the axial flow channels in the outer side stator wire slots in which the adjacent winding is positioned through the fourth connecting flow channel, and the cooling flow channel assembly which is sequentially connected in series inside and outside is formed.
Preferably, the connecting flow channel comprises a first connecting flow channel, a second connecting flow channel, a third connecting flow channel and a fourth connecting flow channel, adjacent axial flow channels in part of the inner side stator wire slots are communicated through the first connecting flow channel, adjacent axial flow channels in part of the outer side stator wire slots are communicated through the second connecting flow channel, part of the inner side stator wire slots with the same winding at the first end and the axial flow channels in the outer side stator wire slots are communicated through the third connecting flow channel, part of the inner side stator wire slots with the second end and the axial flow channels in the outer side stator wire slots with the adjacent windings are communicated through the fourth connecting flow channel, and the cooling flow channel assembly which is sequentially connected in series inside and outside is formed.
Preferably, the axial flow channel is fixed by filling insulating medium after being positioned in the stator slot, and the winding and the axial flow channel positioned in the stator slot are completely wrapped by the insulating medium.
Preferably, the cooling flow channel assembly further comprises a cooling inlet pipe and a cooling outlet pipe, and the cooling medium enters through the cooling inlet pipe and flows out of the cooling outlet pipe after flowing through all the axial flow channels.
Preferably, the cooling inlet pipe and the cooling outlet pipe are directly connected to an external cooling medium supply device to form independent cooling flow paths.
Preferably, the cooling inlet pipe and the cooling outlet pipe are connected with a cooling flow passage inside the motor to form a complete machine circulating cooling loop.
According to another aspect of the present application, there is provided an electric machine including an electric machine stator cooling structure, which is the electric machine stator cooling structure described above.
The application provides a motor stator cooling structure, including stator core, stator wire casing, winding and cooling runner subassembly, the stator wire casing includes inboard stator wire casing and outside stator wire casing, and the winding is around establishing in inboard stator wire casing and outside stator wire casing, and the cooling runner subassembly includes the axial runner of the axial extension along stator core, and the axial runner sets up in inboard stator wire casing and outside stator wire casing. The motor stator cooling structure of this embodiment all is provided with the axial runner in the inboard stator wire casing and the outside stator wire casing that the great winding of calorific capacity is located, forms the mode that places the cooling runner in the groove, can utilize the cooling medium in the axial runner to carry out effective cooling to winding and stator core, can effectively reduce the temperature of stator especially winding, improves the power density and the stability of motor, avoids the local high temperature of winding, improves motor output.
Drawings
Fig. 1 is a flow passage structure diagram of a stator cooling structure of a motor according to an embodiment of the present application;
fig. 2 is a partial stator structure view of a stator cooling structure of an electric machine according to an embodiment of the present application;
fig. 3 is a perspective view of an axial flow passage of a stator cooling structure of a motor according to an embodiment of the present application;
fig. 4 is a perspective view illustrating a first connection flow path of a stator cooling structure of a motor according to an embodiment of the present application;
fig. 5 is a perspective view illustrating a third connection flow path of a stator cooling structure of a motor according to an embodiment of the present application;
fig. 6 is a perspective view illustrating a fourth connection flow path of a stator cooling structure of a motor according to an embodiment of the present application;
fig. 7 is a schematic perspective view of a cooling structure of a stator of an electric machine according to an embodiment of the present application;
FIG. 8 is a schematic view of a first end face structure of a stator cooling structure of an electric machine according to an embodiment of the present application;
fig. 9 is a structural diagram of a second end face of a cooling structure of a motor stator according to an embodiment of the present application;
fig. 10 is a schematic diagram of a post-potting structure of a stator cooling structure of an electric machine according to an embodiment of the present application.
The reference numerals are represented as:
1. a stator core; 2. an inner stator slot; 3. an outer stator slot; 4. an axial flow passage; 5. an insulating medium; 6. a first connecting flow passage; 7. a third connecting flow channel; 8. a fourth connecting flow channel; 9. cooling the inlet pipe; 10. cooling out the pipe; 11. a stator yoke; 12. a stator tooth portion; 13. and (4) winding.
Detailed Description
Referring to fig. 1 to 10 in combination, according to an embodiment of the present application, a motor stator cooling structure includes a stator core 1, stator slots, windings 13 and a cooling flow channel assembly, where the stator slots include an inner stator slot 2 and an outer stator slot 3, the windings 13 are wound in the inner stator slot 2 and the outer stator slot 3, the cooling flow channel assembly includes an axial flow channel 4 extending in an axial direction of the stator core 1, and the axial flow channel 4 is disposed in the inner stator slot 2 and the outer stator slot 3.
The motor stator cooling structure of this embodiment, all be provided with axial runner 4 in inboard stator wire casing 2 and the outside stator wire casing 3 at the great winding 13 place of calorific capacity, form the mode of placing the cooling runner in the groove, can utilize the coolant flow in the axial runner 4 to take away winding 13 and stator heat, effectively cool off winding 13 and stator core 1, can effectively reduce the temperature of stator especially winding 13, improve the power density and the stability of motor, avoid the local high temperature of winding, improve motor output.
In this embodiment, the stator core 1 is formed by laminating or integrally processing a magnetic material, the magnetic material is, for example, a silicon steel sheet, an amorphous alloy or other soft magnetic material, the stator core 1 includes an inner stator slot 2, an outer stator slot 3, a stator yoke 11 and stator teeth 12, the inner stator slot 2 is located between adjacent inner stator teeth 12, the outer stator slot 3 is located between adjacent outer stator teeth 12, insulation processing needs to be performed between the winding 13 and the stator core 1, and the insulation grade needs to be F grade or above.
The axial flow channel 4 is located in the inner side stator wire slot 2 and the outer side stator wire slot 3, the distances between the axial flow channel and the windings 13 and the stator tooth parts 12 are short, sufficient heat exchange can be carried out, when a cooling medium flows, heat of the windings 13 located in the stator wire slots can be taken away, heat generated by the stator tooth parts 12 on two sides can be taken away, and the cooling effect of the motor stator is effectively improved.
After the cooling flow channel assembly is introduced with the cooling medium, the heat generated by the stator core 1 and the winding 13 can be taken away in the flowing process of the cooling medium, and the axial flow channels 4 of the cooling flow channel assembly are uniformly arranged in all the stator wire slots and are close to the stator core 1 and the winding 13, so that the cooling system in the related art is more prominent in the cooling process.
The cooling runner assembly is made of metal materials with high heat conductivity such as copper and aluminum, and a better cooling effect can be obtained. The cooling flow channel assembly should have certain withstand voltage and good air tightness, and the safe electrical distance between the cooling flow channel assembly and the winding 13 should be satisfied.
In one embodiment, the stator wire slot is filled with an insulating medium 5, the insulating medium 5 is a heat conducting material, the axial flow channel 4 is embedded in the insulating medium 5, so that the heat transfer area between the axial flow channel 4 and the stator core 1 and between the axial flow channel and the winding 13 can be enlarged, the heat transfer efficiency is improved by utilizing the heat conducting insulating medium 5, the heat exchange effect between the cooling medium in the axial flow channel 4 and the stator core 1 and between the cooling medium and the winding 13 is enhanced, and the cooling effect of the motor stator cooling structure on the motor stator is improved.
In one embodiment, the cooling flow channel assembly may be fixed by the structure of the motor itself, for example, by a skeleton, or by adding an insulating fixing structure to the stator core 1.
In one embodiment, the axial flow channel 4 is fixed by the insulating medium 5, so that the insulating medium 5 can be used for realizing the installation and fixation of the axial flow channel 4, and further realizing the fixation of the cooling flow channel assembly without adding an additional fixing structure, so that the whole structure is simpler and the realization is more convenient.
In one embodiment, the insulating medium 5 is formed by mixing a resin and a curing agent, and the thermal conductivity of the insulating medium 5 is greater than or equal to 0.5W/(m × k). The mixture that resin and curing agent mix and form has better mobility at normal atmospheric temperature, has good thermal conductivity after the solidification, consequently can guarantee more effectively that the combination between insulating medium 5 and each part is more closely knit, and bonding strength is higher, and the bonding effect is better, and heat transfer effect is better, and fixed effect is good.
In one embodiment, the cooling flow channel assembly further comprises a connecting flow channel through which the axial flow channels 4 communicate. This kind of in this embodiment, can form an integral cooling runner subassembly through connecting the runner intercommunication between the axial runner 4, can realize being connected with cooling medium supply structure more conveniently, reduce the connection degree of difficulty, the wholeness is better, and the cooling effect is better.
In one embodiment, the connecting flow channels include a first connecting flow channel 6 and a second connecting flow channel, adjacent axial flow channels 4 in the inner stator slot 2 are sequentially communicated through the first connecting flow channel 6 to form an inner cooling flow channel in series, and adjacent axial flow channels 4 in the outer stator slot 3 are sequentially communicated through the second connecting flow channel to form an outer cooling flow channel in series.
In this embodiment, the axial flow channel 4 located in the inside stator slot 2 and the axial flow channel 4 located in the outside stator slot 3 form two mutually independent cooling flow paths, the axial flow channel 4 located in the inside stator slot 2 is connected in series through the first connecting flow channel 6 to effectively cool the winding inner ring and the stator core inner ring, and the axial flow channel 4 located in the outside stator slot 3 is connected in series through the second connecting flow channel to effectively cool the winding outer ring and the stator core outer ring. The second connecting flow path and the first connecting flow path 6 in this embodiment are similar in structure and different in length.
The inner cooling flow channel and the outer cooling flow channel in this embodiment may be arranged in parallel or in series, and when they are arranged in parallel, they may be connected directly by the cooling inlet pipe and the cooling outlet pipe, and when they are arranged in series, they may be connected by the third connecting flow channel 7 and/or the fourth connecting flow channel 8 described below.
In one embodiment, the connection flow channels include a third connection flow channel 7 and a fourth connection flow channel 8, the axial flow channel 4 in the inner stator slot 2 and the outer stator slot 3 where the same winding 13 at the first end is located is communicated through the third connection flow channel 7, and the axial flow channel 4 in the inner stator slot 2 and the outer stator slot 3 where the adjacent winding 13 is located at the second end is communicated through the fourth connection flow channel 8, so as to form a cooling flow channel assembly in serial connection inside and outside. In this embodiment, the axial flow channels 4 located in the same radial direction at one end are communicated with each other through the third connecting flow channel 7, and the inner axial flow channels 4 located in different radial directions are communicated with the adjacent outer axial flow channels 4 through the fourth connecting flow channel 8, so that all the axial flow channels 4 can be connected in series sequentially through the connecting flow channels to form a cooling flow channel assembly connected in series, and the winding 13 and the stator core 1 can be effectively cooled. In this embodiment, because the third connecting flow channel 7 and the fourth connecting flow channel 8 are both disposed at the end of the winding 13, the end face cooling of the winding 13 can be achieved, and the third connecting flow channel and the fourth connecting flow channel are matched with the axial flow channel 4, so that the winding 13 can be cooled more comprehensively and effectively, and the cooling effect of the winding 13 is further improved.
In one embodiment, the connecting flow channels include a first connecting flow channel 6, a third connecting flow channel 7 and a fourth connecting flow channel 8, adjacent axial flow channels 4 in a part of the inner stator slots 2 are communicated through the first connecting flow channel 6, a part of the axial flow channels 4 in the inner stator slots 2 and the outer stator slots 3 where the same winding 13 at the first end is located are communicated through the third connecting flow channel 7, and a part of the axial flow channels 4 in the inner stator slots 2 and the outer stator slots 3 where the adjacent winding 13 is located are communicated through the fourth connecting flow channel 8, so as to form a cooling flow channel assembly which is sequentially connected in series inside and outside. In this embodiment, different connecting channels can be combined as required, so that all the axial channels 4 can be connected in series, except that different combinations of connecting channels are adopted, and the flow paths of the formed cooling channel assemblies are different.
In one embodiment, the connecting flow channels include a second connecting flow channel, a third connecting flow channel 7 and a fourth connecting flow channel 8, adjacent axial flow channels 4 in a part of the outer stator slots 3 are communicated through the second connecting flow channel, an inner stator slot 2 in which the same winding 13 at the first end is located and the axial flow channels 4 in the outer stator slots 3 are communicated through the third connecting flow channel 7, and an inner stator slot 2 in a part of the second end and the axial flow channels 4 in the outer stator slots 3 in which the adjacent windings 13 are located are communicated through the fourth connecting flow channel 8, so as to form a cooling flow channel assembly which is sequentially connected in series inside and outside.
In one embodiment, the connecting flow channels include a first connecting flow channel 6, a second connecting flow channel, a third connecting flow channel 7 and a fourth connecting flow channel 8, adjacent axial flow channels 4 in a part of the inner side stator slots 2 are communicated through the first connecting flow channel 6, adjacent axial flow channels 4 in a part of the outer side stator slots 3 are communicated through the second connecting flow channel, part of the inner side stator slots 2 where the same winding 13 located at the first end is located are communicated with the axial flow channels 4 in the outer side stator slots 3 through the third connecting flow channel 7, part of the inner side stator slots 2 located at the second end are communicated with the axial flow channels 4 in the outer side stator slots 3 where the adjacent windings 13 are located through the fourth connecting flow channel 8, and a cooling flow channel assembly sequentially connected in series inside and outside is formed.
In one embodiment, the axial flow channel 4 is fixed by filling the insulating medium 5 after being positioned in the stator slot, and the winding 13 and the axial flow channel 4 positioned in the stator slot are completely wrapped by the insulating medium 5.
In one embodiment, the cooling channel assembly further includes a cooling inlet pipe 9 and a cooling outlet pipe 10, and the cooling medium enters through the cooling inlet pipe 9 and flows out from the cooling outlet pipe 10 after flowing through all the axial channels 4.
In one embodiment, the cooling inlet pipe 9 and the cooling outlet pipe 10 are directly connected with an external cooling medium supply device to form an independent cooling flow path, and the cooling flow path is independent of other flow paths inside the motor, so that the cooling medium is lower in temperature and has better cooling effect.
In one embodiment, the cooling inlet pipe 9 and the cooling outlet pipe 10 are connected with an internal cooling flow passage of the motor, such as a casing flow passage or an end cover flow passage, and form a whole machine circulation cooling loop. The cooling loop is realized by utilizing the internal cooling flow path of the motor, so that the structure is simpler, the source of an external cooling medium is not required to be increased, the overall structure is simpler, the miniaturization is more favorably realized, and the structure is more compact.
The manufacturing method of the motor stator cooling structure in the embodiment is as follows:
after the wire embedding process of the back winding type winding 13 is completed in the stator core 1, the axial flow channel 4 is placed in the inner stator wire slot 2 and the outer stator wire slot 3, and the preliminary positioning is carried out by utilizing corresponding tools; the stator core 1 is placed into a corresponding device to carry out the filling process of the insulating medium 5, the whole environment needs to be ensured to be in a negative pressure state in the filling process, and the processes of filling, observation, vacuumizing again and refilling need to be carried out for many times in the filling process, so that no bubbles are generated in the insulating medium 5, and the volume of the insulating medium 5 can be accurately controlled. And after the filling is finished, placing the motor stator in a heat preservation box for heat preservation for a period of time to solidify the insulating medium 5. After solidification, the axial flow channel 4 is fixed in the inner stator slot 2 and the outer stator slot 3 and is not loosened, and the insulation medium 5 completely wraps the winding 13 in the stator slot and the axial flow channel 4.
After the insulating medium 5 is solidified, all the connecting runners are assembled on the axial runner 4, the axial runner 4 and the connecting runners are welded into a whole in a welding mode, and after the assembly is completed, the cooling runner assembly has the characteristics of certain pressure resistance and good air tightness. Therefore, the novel motor stator cooling structure is manufactured.
According to an embodiment of the present application, an electric machine includes an electric machine stator cooling structure, which is the above-described electric machine stator cooling structure.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (14)
1. The utility model provides a motor stator cooling structure, its characterized in that includes stator core (1), stator wire casing, winding (13) and cooling runner subassembly, the stator wire casing includes inboard stator wire casing (2) and outside stator wire casing (3), winding (13) are around establishing in inboard stator wire casing (2) and outside stator wire casing (3), the cooling runner subassembly includes the edge axial runner (4) of the axial extension of stator core (1), axial runner (4) set up in inboard stator wire casing (2) and outside stator wire casing (3).
2. The electric machine stator cooling structure according to claim 1, characterized in that the stator slots are filled with an insulating medium (5), the insulating medium (5) is a heat conducting material, and the axial flow channels (4) are embedded in the insulating medium (5).
3. The electric machine stator cooling structure according to claim 2, characterized in that the axial flow channel (4) is fixed by the insulating medium (5).
4. The electric machine stator cooling structure according to any one of claims 1 to 3, characterized in that the cooling flow channel assembly further comprises a connecting flow channel through which the axial flow channel (4) communicates.
5. The motor stator cooling structure according to claim 4, wherein the connection flow channels include a first connection flow channel (6) and a second connection flow channel, adjacent axial flow channels (4) in the inner stator slot (2) are sequentially communicated through the first connection flow channel (6) to form inner cooling flow channels connected in series, and adjacent axial flow channels (4) in the outer stator slot (3) are sequentially communicated through the second connection flow channel to form outer cooling flow channels connected in series.
6. The motor stator cooling structure according to claim 4, wherein the connection flow channels include a third connection flow channel (7) and a fourth connection flow channel (8), the inner stator wire slot (2) where the same winding (13) at the first end is located and the axial flow channel (4) in the outer stator wire slot (3) are communicated through the third connection flow channel (7), and the inner stator wire slot (2) at the second end and the axial flow channel (4) in the outer stator wire slot (3) where the adjacent winding (13) is located are communicated through the fourth connection flow channel (8), so as to form a cooling flow channel assembly which is sequentially connected in series inside and outside.
7. The motor stator cooling structure according to claim 4, wherein the connecting flow channel comprises a first connecting flow channel (6), a third connecting flow channel (7) and a fourth connecting flow channel (8), adjacent axial flow channels (4) in partial inner side stator wire slots (2) are communicated through the first connecting flow channel (6), partial inner side stator wire slots (2) in which the same winding (13) at the first end is located are communicated with the axial flow channels (4) in outer side stator wire slots (3) through the third connecting flow channel (7), partial inner side stator wire slots (2) at the second end are communicated with the axial flow channels (4) in outer side stator wire slots (3) in which the adjacent windings (13) are located are communicated through the fourth connecting flow channel (8), and a cooling flow channel assembly sequentially connected in series inside and outside is formed.
8. The motor stator cooling structure according to claim 4, wherein the connecting flow channel comprises a second connecting flow channel, a third connecting flow channel (7) and a fourth connecting flow channel (8), adjacent axial flow channels (4) in part of the outer side stator slots (3) are communicated through the second connecting flow channel, part of the axial flow channels (4) in the inner side stator slots (2) and the outer side stator slots (3) with the same winding (13) at the first end are communicated through the third connecting flow channel (7), and part of the axial flow channels (4) in the inner side stator slots (2) and the outer side stator slots (3) with the adjacent windings (13) at the second end are communicated through the fourth connecting flow channel (8), so that an inner and outer sequentially-connected cooling flow channel assembly is formed.
9. The motor stator cooling structure according to claim 4, wherein the connecting flow channels include a first connecting flow channel (6), a second connecting flow channel, a third connecting flow channel (7) and a fourth connecting flow channel (8), adjacent axial flow channels (4) in a part of the inner side stator slots (2) are communicated through the first connecting flow channel (6), adjacent axial flow channels (4) in a part of the outer side stator slots (3) are communicated through the second connecting flow channel, an inner side stator slot (2) where a same winding (13) is located in a part of the first end is communicated with the axial flow channels (4) in the outer side stator slots (3) through the third connecting flow channel (7), and an inner side stator slot (2) in a part of the second end is communicated with the axial flow channels (4) in the outer side stator slots (3) where the adjacent winding (13) is located in the fourth connecting flow channel (8), and forming a cooling flow passage assembly which is connected in series inside and outside.
10. The electric machine stator cooling structure according to any one of claims 1 to 3, characterized in that the axial flow channels (4) are fixed by filling with an insulating medium (5) after being positioned in the stator slots, and the windings (13) and the axial flow channels (4) positioned in the stator slots are completely wrapped by the insulating medium (5).
11. The electric machine stator cooling structure according to any one of claims 1 to 3, characterized in that the cooling flow channel assembly further comprises a cooling inlet pipe (9) and a cooling outlet pipe (10), and a cooling medium enters through the cooling inlet pipe (9) and flows out of the cooling outlet pipe (10) after flowing through all the axial flow channels (4).
12. The electric machine stator cooling structure according to claim 11, characterized in that the cooling inlet pipe (9) and the cooling outlet pipe (10) are directly connected to an external cooling medium supply device to form independent cooling flow paths.
13. The motor stator cooling structure according to claim 11, wherein the cooling inlet pipe (9) and the cooling outlet pipe (10) are connected with a motor internal cooling flow passage to form a complete machine circulation cooling loop.
14. An electric machine comprising an electric machine stator cooling structure, characterized in that the electric machine stator cooling structure is the electric machine stator cooling structure of any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556193.0U CN215990344U (en) | 2021-07-08 | 2021-07-08 | Motor stator cooling structure and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556193.0U CN215990344U (en) | 2021-07-08 | 2021-07-08 | Motor stator cooling structure and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215990344U true CN215990344U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121556193.0U Active CN215990344U (en) | 2021-07-08 | 2021-07-08 | Motor stator cooling structure and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215990344U (en) |
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2021
- 2021-07-08 CN CN202121556193.0U patent/CN215990344U/en active Active
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